| ; RUN: opt %loadPolly -polly-codegen -S < %s | FileCheck %s |
| ; |
| ; llvm.org/PR25439 |
| ; Scalar reloads in the generated entering block were not recognized as |
| ; dominating the subregion blocks when there were multiple entering nodes. This |
| ; resulted in values defined in there (here: %cond used in subregionB_entry) not |
| ; being copied. We check whether it is reusing the reloaded scalar. |
| ; |
| ; CHECK-LABEL: polly.stmt.subregionB_entry.exit: |
| ; CHECK: store i1 %polly.cond, i1* %cond.s2a |
| ; |
| ; CHECK-LABEL: polly.stmt.subregionB_entry.entry: |
| ; CHECK: %cond.s2a.reload = load i1, i1* %cond.s2a |
| ; |
| ; CHECK-LABEL: polly.stmt.subregionB_entry: |
| ; CHECK: br i1 %cond.s2a.reload |
| |
| define void @func(i32* %A) { |
| entry: |
| br label %subregionA_entry |
| |
| subregionA_entry: |
| %cond = phi i1 [ false, %entry ], [ true, %subregionB_exit ] |
| br i1 %cond, label %subregionA_if, label %subregionA_else |
| |
| subregionA_if: |
| br label %subregionB_entry |
| |
| subregionA_else: |
| br label %subregionB_entry |
| |
| subregionB_entry: |
| store i32 0, i32* %A |
| br i1 %cond, label %subregionB_if, label %subregionB_exit |
| |
| subregionB_if: |
| br label %subregionB_exit |
| |
| subregionB_exit: |
| br i1 false, label %subregionA_entry, label %return |
| |
| return: |
| ret void |
| } |
